Question: Who was married to Ida Lupino on January 1st, 1951?
Paraphrase: Who married Ida Lupino on January 1, 1951?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q148669 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1951')) }